Improvement in lamp-burners



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- Lamp. I Patented May 17. 1870.

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WILLIAM DI-L-UIDLOW, or NEW YORK, N. .Y.

Letters Patent N 103,213, dated jllay 17,1870.

IMPROVEMENT IN LAMP-BURNHRS.-

The Schedule referred to in these Letters'Patent and making part cf the same To all whom it may concern:

' ence marked thereon making a part of this specification.

My invention relates to that class of burners by which a round or Argand. flame is formed, and consists in so constructing the wick-tube-that a flat wick may pass into the tube folded, and come out at the top in a ronn'dor Argand shape.

In order to enable others skilled in the art to which my invention appertains to make and use the same, I will now proceed to describe its construction andoperation, referring to the annexed drawings, in which ,Figure 1 is a perspective of the lamp-burner complete;

Figure 2 is a vertical section of the same.

Figure 3 is a bottom". view, showing the double ratohets Figure 4 is a bottom view of the-wicktube;

Figure 5 is a top view of the same; and

Figure 6 is a perspective of the plate from which the wick-tube ismade, showing the inner tube already formed. I

A represents the base of the. burner, which is to connect with the reservoir by a screw 'or otherwise, and through which base the wick-tube passes, said tube being secured to the basein any suitable manner.

The wick-tube-Bconsists of a central tube, a, and an outer tube or casing, I), made of one piece of sheet metal.

This wick-tube is made of one piece of metal in the following manner:

A piece of sheet metal is first bent into a comparativcly small tubular form, so split or slotted at the top that the edges come together, forming the top of the inside tube, and the ends of the folded 'inet-al, are reversed and carriedaronnd forming an outer sheath or case to the inside tube, the space between these forining'the passage for the wick O. 7 At the point where the ends of the sheet metal are reversed to form the outer tube 1), is left an opening, t, for the purpose of admitting air into the central tube a, and the lower end of tho wick-tube thus formed is flattened, so as to admit a flat wick folded.

In the base A, either within or on theoutside of the tube 1), is placed a shaft, (1, operated from the outside by a button, in the 'usual way;

This shaft is provided with two ratchets or cogwheels, e c, which gear into two similar ratchets, ff, mounted on a shaft-7a, and between these two sets of ratchets the wick is moved upward.

The wick G is passed into the lower end of the wick-tube, between the wick-raisers c e and f j, in a flat, folded condition. Its edges are then separated or diverged around the air-passage t, at the side of the central tube a, and then they are brought together again at the top 'in a circular form. By this means one flat wick is folded and'forms an Argaud or hollow flame.

Around the wick-tube B is a conical case or inverted funnel, D, to confine and supply air to the air-passage "for the inner tube.

The air-passage to this cone is unobstructed at the bottom,'as the cone is fastened to the wick-tube only at the top. I

The cone D is of that exact diameter at the'bot tom to allow just a proper proportion of air to pass under it to supply the inner draught, and to allow only just enough air to ,pass up around it to supply the flame with air ii'om between the cone and the chimney, and direct from the outer atmosphere \VllEhOllbfil'SU passing it under a cone.

Iftoo much ,air passes within through the, central tube the'flame will be unsteady, and too much scattered or spread; or, if a disproportion of air should he allowed to pass up around the flame between the cone and the chimney, the flame will be narrowed or too much contracted.

A chimney with a contracted throat or neck is used to confine the passing air' upon the flame at the point of ignition and produce a perfect combustion.

On the outside of the base A are placed a sulficient number of double spring catches B E, or chimney-holdcrs, to support and hold the chimney in proper position around the cone D.

I do not claim a flat wick in a lamp-burner that bends said wick in an Argand form; nor do I claim the employment of two wick's to form an Argan'd flame.

My invention differs from the above materially.

The wick is of one piece, and folded in the center,

and from thence passe-s folded into the lamp-throat, is spread around a tube, and formsan 'annular flame at its top.

Having thus fully described my invention,

\Vhat I claim as new, and desire tosecure by Letters Patent, is

1. A lamp-burner, constructed as described, so

that aflat wick passes in a folded condition into the wick-tube and through the wick-raiscrs and is then spread into a circular form at the top to make an Argandflame, substantially as specified.

2.- The wick-tub B made of one piece of metal, substantially as herein set forth.

3. The combination of the cone D, double springs E E, wiolctube B, as. constructed, and \vicknaisers e c, all substantially as set forth.

In testimony that I claim The foregoing, I have hereunto set my hand this 28th day of July, 1869. \Vitnesses: WM. 1). LUDLOVV.

G. M. ALEXANDER,

J. M. Mason. 

